Funniest tweets on the second presidential debate

The second presidential debate was spirited, providing plenty of fodder for Twitter

The town hall format gave Twitter new characters to make fun of

The second of three presidential debates was held at Hofstra University in New York

(CNN) -- Every debate seems destined to have a break-out meme. In the first round, it was Big Bird. This time it was Mitt Romney's binder full of women, which instantly became a trending hashtag, Twitter handle, a Facebook group and a Tumblr. (Talking about his effort to hire women for his cabinet, Romney said "And I brought us whole binders full of, of women.")

Other popular, bipartisan bits of mockery covered the far livelier and sometimes cringe-inducing tone of the debate, shout outs to Mr. Gas, Mr. Coal and Mr. Oil, the candidates difficulty saying the name Lorraine and the audience members themselves.

Twitter says there were 7.2 million tweets during the 90-minute debate. The most popular moments were an immigration question, Obama's comment to Romney on China and Romney's response to a question about raising taxes.

Here are some of our favorite tweets of the night. Share yours in the comments.

Obama, Romney clash over energy

Obama, Romney get heated over Libya

U.S. presidential debate: Who won?

Elon James White -- I feel like Obama's staff stabbed him in the chest w/ the adrenaline needle from Pulp Fiction. THAT DUDE IS AWAKE! #twib2012 #debates

adamsorensen -- Is there anything more awkward than putting two guys on stools 10 feet apart on a huge stage and asking them to look natural for 90 minutes?

Andy Borowitz -- Romney: "Jeremy, if you are illegal, you can get a job working at my house." #debate